Method and device for processing image data from non-interlacing type into interlacing one

Abstract

A method for processing an image to convert a non-interlacing scan data into an interlacing scan data is disclosed. The method includes the steps of receiving a non-interlacing scan data, the non-interlacing scan data including plural pixels, replacing a color space value of a selected one of the pixels in the non-interlacing scan data with a combination of color space values of the selected one pixel and at least one adjacent pixel to obtain a blurringly filtered non-interlacing scan data, scaling the blurringly filtered non-interlacing scan data according to a specific algorithm, and converting the blurringly filtered non-interlacing scan data into an interlacing scan data. An image-processing device for converting a non-interlacing scan data into an interlacing scan data is also disclosed. The device includes a blurring filter, a scaler and a converter.

1. A method for processing an image to convert a non-interlacing scan data into an interlacing scan data, comprising the steps of:
 receiving a non-interlacing scan data, said non-interlacing scan data consisting of n pixels; 
 replacing a color space value of a first one of said n pixels in said non-interlacing scan data with a first combination of color space values of said first pixel and at least one adjacent pixel to obtain a blurringly filtered non-interlacing scan data; 
 scaling said blurringly filtered non-interlacing scan data to result in a non-interlacing scan data consisting of m pixels, wherein m is less than n, and a color space value of a second one of said m pixels in said non-interlacing scan data is replaced with a second combination of color space values of said second pixel and at least one adjacent pixel to obtain a deflickered non-interlacing scan data; 
 converting said deflickered non-interlacing scan data into an interlacing scan data. 
 
     
     
       2. The method according to  claim 1  wherein said first combination is a linear combination of color space values of said first pixel and two adjacent pixels. 
     
     
       3. The method according to  claim 2  wherein said two adjacent pixels are two pixels just before and after said first pixel. 
     
     
       4. The method according to  claim 2  wherein said two adjacent pixels are two pixels just above and below said first pixel. 
     
     
       5. The method according to  claim 2  wherein said linear combination has a coefficient of [¼, ½, ¼]. 
     
     
       6. The method according to  claim 1  wherein said scaling step includes a vertical scaling operation. 
     
     
       7. The method according to  claim 1  wherein said scaling step includes a horizontal scaling operation. 
     
     
       8. The method according to  claim 1  wherein said second combination is based on a bilinear algorithm. 
     
     
       9. The method according to  claim 1  wherein said blurringly filtered non-interlacing scan data remains n pixels, and said scaling step reduces the pixel number from n to m. 
     
     
       10. A device for processing an image comprising:
 a blurring filter device receiving an image data including plural pixels, and replacing a color space value of a first one of said pixels in said image data with a first combination of color space values of said first pixel and at least one adjacent pixel to obtain a blurringly filtered image data; 
 a scaler coupling with said blurring filter device for receiving and scaling said blurringly filtered image data to obtain a scaled image data; and 
 a deflicker receiving said scaled data, and replacing a color space value of a second one of pixels in said scaled image data with a second combination of color space values of said second pixel and at least one adjacent pixel to obtain a deflickered image data. 
 
     
     
       11. The device according to  claim 10  wherein said image data, said blurringly filtered image data, said scaled image data and said deflickered image data are non-interlacing scan data. 
     
     
       12. The device according to  claim 10  wherein said first combination is a linear combination of color space values of said first pixel and two adjacent pixels. 
     
     
       13. The device according to  claim 12  wherein said linear combination has a coefficient of [¼, ½, ¼]. 
     
     
       14. The device according to  claim 10  wherein said scaler performs a vertical scaling operation. 
     
     
       15. The device according to  claim 10  wherein said scaler performs a horizontal scaling operation. 
     
     
       16. The device according to  claim 10  wherein said scaler and said deflicker operate according to a bilinear algorithm.